Getting a travel CPAP requires the same prescription you need for any CPAP machine, since the FDA classifies all positive airway pressure devices as Class II medical devices. If you already have a CPAP prescription, you can typically use it to purchase a travel unit from a durable medical equipment supplier or an online retailer. If you don’t have one yet, you’ll need a sleep study and a prescription from your doctor before you can buy any CPAP, travel-sized or otherwise.
What Your Prescription Needs to Include
A valid CPAP prescription isn’t just a note from your doctor saying you need one. It must contain specific details: your full name and date of birth, a confirmed diagnosis of obstructive sleep apnea with the appropriate diagnostic code, the type of therapy (CPAP, APAP, or BiPAP), your prescribed pressure settings or pressure range, and your doctor’s name, signature, and licensing information. It may also specify mask type and whether you need features like a heated humidifier.
If you already use a home CPAP, your existing prescription almost certainly covers a travel unit too. Call your sleep specialist’s office and ask them to send a copy of your current script. Most online CPAP retailers will accept a faxed or uploaded prescription, and some will even contact your doctor’s office on your behalf to verify it. Prescriptions are often written with “lifetime need” as the duration, so yours may still be valid even if it’s a few years old.
Where to Buy a Travel CPAP
You have three main options: your current durable medical equipment (DME) supplier, an online CPAP retailer, or directly through your sleep clinic if they stock equipment. Online retailers tend to offer the widest selection of travel-specific models and often have lower prices than brick-and-mortar DME suppliers, though you’ll want to confirm they’re authorized dealers for the brand you’re considering.
Most online stores walk you through a simple checkout process where you upload your prescription, select your device, and choose accessories like a travel battery or carrying case. Delivery typically takes a few business days.
Will Insurance Cover It?
Don’t count on it. Medicare Part B covers CPAP therapy, but coverage works as a 13-month rental that converts to ownership, and the program doesn’t specifically address portable or travel devices as a separate category. Most private insurers follow a similar approach: they’ll cover one CPAP machine, and a second “convenience” device for travel usually isn’t included.
In practice, most people pay out of pocket for a travel CPAP. Prices range from roughly $500 to $900 depending on the model and accessories. If your current home unit is old enough that you qualify for a replacement under your insurance plan, you could potentially use that benefit toward a travel-sized model instead, but you’d need to confirm with your insurer and your prescribing doctor.
Comparing the Leading Travel Models
Two models dominate the travel CPAP market right now: the ResMed AirMini and the Breas Z2 Auto. Both weigh well under a pound and fit easily in a carry-on bag or even a large jacket pocket.
- ResMed AirMini: 10.6 ounces, roughly 5.4 x 3.3 x 2.1 inches. Noise level of 30 decibels (about the volume of a whisper). Uses a proprietary waterless humidification cartridge called HumidX that clips into the tubing near the mask.
- Breas Z2 Auto: 10.4 ounces, slightly longer at 6.48 x 3.30 x 2.02 inches. Quieter at 26 decibels. Uses a universal heat moisture exchanger, meaning you’re not locked into buying one brand’s replacement cartridges.
Both devices deliver auto-adjusting pressure, so they respond to your breathing events throughout the night. The choice often comes down to whether you prefer the AirMini’s app-based tracking and smaller footprint, or the Z2’s quieter operation and more flexible accessory compatibility.
How Travel CPAPs Differ From Home Units
Travel CPAPs deliver the same type of pressurized air as a full-sized machine, but there are real performance differences worth knowing about. Smaller blower motors can be less responsive to subtle changes in airflow resistance, particularly at lower pressure settings. Some users find they need a slightly higher pressure on their travel unit to get the same therapeutic effect they get at home. If your prescribed pressure is on the lower end, talk to your sleep doctor about whether an adjustment makes sense for your portable device.
The biggest tradeoff is humidification. Home machines use a heated water chamber that actively warms and moistens the air. Travel units skip the water chamber entirely to save size and weight, relying instead on a small cartridge called a heat moisture exchanger. This captures moisture from your exhaled breath and releases it back when you inhale. It works reasonably well, but it won’t match the comfort level of a full heated humidifier. If you’re prone to dry mouth or nasal irritation, expect some adjustment. The cartridges also need to be replaced regularly, typically every 30 days.
Flying With a Travel CPAP
CPAP machines are universally permitted on aircraft, and airlines cannot count them as one of your carry-on items. You can bring your CPAP through security in its own bag on top of your regular carry-on and personal item. TSA agents may ask you to remove it from its case for X-ray screening, so pack it in an easily accessible spot.
The rules around batteries matter more. If you’re bringing a portable battery pack to use your CPAP on the plane or in places without outlets, it must go in your carry-on, never in checked luggage. The FAA limits lithium-ion batteries to 100 watt-hours per battery without special approval. Batteries between 101 and 160 watt-hours require airline approval, and you can carry a maximum of two spares in that range. Protect the battery terminals from short circuits by keeping them in a case, covering them with tape, or leaving them in their original packaging.
Most travel CPAP battery packs fall within the 100 watt-hour limit, so you shouldn’t need airline approval, but check the specs on your specific battery before you fly.
Powering Your CPAP Off the Grid
For camping, road trips, or international travel where outlets aren’t guaranteed, you have several options. External battery packs designed for travel CPAPs can provide up to 13 hours of runtime on a single charge, which is more than enough for one or two nights depending on your pressure settings and whether you’re using any humidification features. Higher pressures drain batteries faster.
You can also power most CPAP machines from a car’s 12-volt outlet using a DC adapter. This is useful for car camping or long drives where you want to top off your battery during the day. Some users pair a small solar panel with a portable power station for extended backcountry trips, though this adds weight and complexity. If you’re traveling internationally, a universal power adapter handles voltage differences since most modern travel CPAPs accept 100 to 240 volts automatically.
Steps to Get Started
If you already have a home CPAP and a valid prescription, you can order a travel unit today. Confirm your prescription is on file with your sleep doctor, choose a model based on your priorities (size, noise, humidification compatibility, battery options), and purchase from an authorized dealer. Once it arrives, set it up with your prescribed pressure and use it for a few nights at home before your trip so you can troubleshoot any comfort issues while you still have your home machine as a backup.
If you don’t have a prescription yet, the process starts with a sleep study. Many providers now offer home sleep tests, which are simpler and cheaper than in-lab studies. Once you have a confirmed diagnosis and a prescription with your pressure settings, you can purchase any CPAP, including a travel model, as your primary device if you prefer portability over the larger feature set of a home unit.